Examples of significant figures

Answer 1

significant figures are digits of certainty. In other words they are exact numbers. Except zeros are placeholders (not exact) unless if they are in between non zeros. Also zeros at the end of numbers are significant figures if there is a decimal point.

Answer 2

The rules for identifying significant figures when writing or interpreting numbers are as follows:

All non-zero digits are considered significant. For example, 91 has two significant figures (9 and 1), while 123.45 has five significant figures (1, 2, 3, 4 and 5).

Zeros appearing anywhere between two non-zero digits are significant. Example: 101.1203 has seven significant figures: 1, 0, 1, 1, 2, 0 and 3.

Leading zeros are not significant. For example, 0.00052 has two significant figures: 5 and 2.

Trailing zeros in a number containing a decimal point are significant. For example, 12.2300 has six significant figures: 1, 2, 2, 3, 0 and 0. The number 0.000122300 still has only six significant figures (the zeros before the 1 are not significant). In addition, 120.00 has five significant figures since it has three trailing zeros.

Answer 3

37.2+18.0+380=435.24

The significant figure is to round up your answer.

For example count how many number you have after the decimal the least amount is how many significant figures you are supposed to have as an answer...

so the real answer is 4.4x10 to the second power

we can also say that any zero which is in between significant figures(1-9)is a significant figure example

(a)65087- because zero is between five and eight it is a significant figure

Answer 4

1.all non zero numbers are always significant

2.all zeros which are SIMULTANEOUSLY to the right of the decimal point and at the end of the number are always significant

3.all zeros between non zero numbers are always significant

4.all zeros in left of decimal point are always significant

Answer 5

Significant figures indicate the precision of the measured value to anybody who looks at the data. For example, if a weight is measured as being "1100 grams", this means that the mass has been rounded to the nearest hundred grams. If a weight is measured as being "1100.0 grams", this means that the mass has been rounded to the nearest tenth of a gram. Though the numbers plug into the calculator in exactly the same way, they mean very different things.

Answer 6

In any calc, math or science: significance is the same, no special things for Chemistry.

Answer 7

It is the number of digits in the mantissa.